With the audio signal fed to HDSDR, [Aniss] was able to pick up a shortwaveradio broadcaster. While this is by no means a high-performance receiver, building an SDR on a breadboard is still a ...
This is KDDI Corp.’s Yamata Transmitting Station, the nation’s only facility broadcasting shortwaveradio programs to overseas listeners. The station started broadcasts on Jan. 1, 1941.
A QSL Card from Radio Moscow probably got many 14-year-olds on government watch lists. (Public domain) Between World War II and Y2K, shortwave listening was quite an education. With a simple ...